Evolution game Spore is set to get its first expansion pack this spring, in the form of Galactic Adventures.

Online retailers such as Amazon and Play have had the title listed for a week or so now, but EA made the official announcement today with an invite sent to some of the US gaming industry, inviting them to an event about the "Spore 2009 line-up".

Line-up? Sounds like we could be getting more than just an expansion pack this year. The event is planned for the end of the month in San Francisco, so we can no doubt expect more details on what Galactic Adventures will be all about, and anything else Maxis has up its sleeve, then.